They wore matching white ensembles, with Sports Illustrated model Hadid showing her athletic side in a white-and-blue stripped Yankees baseball top, which she paired with distressed white jeans.

The daughter of Real Housewives of Beverly Hill star Yolanda Foster wore her long blonde hair draped over her shoulders and looked radiant with minimal make-up.

DJ Jonas also wore crisp white jeans and a white T shirt with an image of a snow leopard.

Matching: Hadid and Jonas wore white, with the 20-year-old model donning a Yankees top

Making no secret of their romance, Hadid appeared upbeat and happy as she draped an arm over the former Disney star and leaned in close to chat.

However, a more somber Jones appeared focused on his DJ set, and barely cracked a smile.

The pair protected their ears from the loud music with earplugs.

It's over: Hadid attends the 2015 Vanity Fair Oscars party with ex-boyfriend Cody Simpson in February

Hadid has been dogged by rumors that she has yet to move on from her ex-boyfriend, Australian singer Cody Simpson, amid reports they were spotted 'kissing'.

However, with their public PDA it seems Jonas and Hadid are still very much the couple, after they began dating in May.

Jonas' brother Nick Jonas confirmed to E! News that his brother and the blonde beauty are an item, and giving the lovebirds his stamp of approval.

'I like them together. It's a good thing,' he said.

'Joe and I are best friends. We're each other's support system and closest friends, so naturally I'm gonna see a lot of her because they're together and it's great. I'm really happy for them. I think they seem very happy together and it's good.'

On the go: The Guess model in ripped jeans also on Sunday at the Hammerstein Ballroom